In the new year we're going to put a heated towel rail in the bathroom so as per advice we've part drained the system and put x400 into the f+e tank.
Tank filled up/radiators bled and all ok but now we are getting a trickling water sound in the rads upstairs is this normal or do I need to investigate?
Tank filled up/radiators bled and all ok but now we are getting a trickling water sound in the rads upstairs is this normal or do I need to investigate?